CN105635917A - Coupling circuit for correcting phase difference between high-tone unit and low-tone unit of soundbox - Google Patents
Coupling circuit for correcting phase difference between high-tone unit and low-tone unit of soundbox Download PDFInfo
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- CN105635917A CN105635917A CN201610098086.5A CN201610098086A CN105635917A CN 105635917 A CN105635917 A CN 105635917A CN 201610098086 A CN201610098086 A CN 201610098086A CN 105635917 A CN105635917 A CN 105635917A
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- frequency signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2430/00—Signal processing covered by H04R, not provided for in its groups
- H04R2430/20—Processing of the output signals of the acoustic transducers of an array for obtaining a desired directivity characteristic
Abstract
The invention relates to a coupling circuit for correcting the phase difference between a high-tone unit and a low-tone unit of a soundbox. The coupling circuit comprises a signal source, an active frequency division module, a passive frequency division single-module and the soundbox, which are sequentially connected; the active frequency division module comprises a first frequency division circuit, a delay circuit and a frequency mixing circuit; the passive frequency division module comprises a power amplifier and a second frequency division circuit; the second frequency division circuit is arranged in the soundbox; the high-tone unit and the low-tone unit are arranged in the soundbox; a high-frequency signal divided from the first frequency division circuit is sequentially input into the frequency mixing circuit, the power amplifier, the second frequency division circuit and the high-tone unit; and a low-frequency signal divided from the first frequency division circuit is sequentially input into the delay circuit, the frequency mixing circuit, the power amplifier, the second frequency division circuit and the low-tone unit. In the event that the power amplification is not increased, the electric energy is saved and the box body is not enlarged, the high and low-frequency phase difference can be solved; and thus, the listening feeling achieves the effect just like dual drive.
Description
Technical field
The present invention relates to audio amplifier circuit engineering field, particularly relate to a kind of correct audio amplifier voice unit and bass unit phase contrast couple circuit.
Background technology
In sound box system, audio amplifier is generally all made up of voice unit and bass unit, and two unit fixedly mount on Loudspeaker panel, and height unit is due to their vibrational system of structure problem not in one plane, such as Fig. 1, there is range difference between them, namely phase contrast, produce Haas effect. What its result was that people hear the very first time is the sound that sends of bass unit, after hear the sound that voice unit sends. Although the high bass measured on frequency spectrum is balance, but human ear is due to the impact of phase contrast, sense of hearing is unbalanced, two kinds of settling modes are had traditionally: (1) physics solves method: low unit by being placed on and the plan-position of voice unit vibrational system in order to solve this problem, such as Fig. 2, but box volume can increase several times, general seldom employing; (2) circuit settling mode: change Passive into Active crossover, Passive mode is exactly that power after the amplification of a power amplifier is sent into the frequency divider in audio amplifier, high and low frequency driver element respectively is separated again by frequency divider, such as Fig. 3, this mode still has phase contrast, settling mode is as shown in Figure 4, signal source first passes through frequency divider, separate high-frequency signal and low frequency signal, carry out difference correction plus time delay simultaneously, signal after correction is respectively fed to two power amplifiers, the Dual Drive that namely we often say. Dual Drive too increases the amount of power amplifier while solving phase contrast, increases power consumption, and cost is greatly increased, and is generally rarely employed.
Summary of the invention
The technical problem to be solved in the present invention be to provide a kind of correct audio amplifier voice unit and bass unit phase contrast couple circuit, when not increasing power amplifier, saves energy and not strengthening casing, solve the phase contrast of low-and high-frequency so that sense of hearing reaches the effect the same with Dual Drive.
For solving above-mentioned technical problem, the present invention relates to a kind of correct audio amplifier voice unit and bass unit phase contrast couple circuit, including the signal source being sequentially connected with, Active crossover module, Passive single module and audio amplifier, described Active crossover module includes the first frequency dividing circuit, delay circuit and mixting circuit, described Passive module includes amplifirer and the second frequency dividing circuit, described second frequency dividing circuit is arranged at inside described audio amplifier, arranges voice unit and bass unit in described audio amplifier; The signal that signal source inputs is divided into high-frequency signal and low frequency signal by described first frequency dividing circuit, the high-frequency signal that described first frequency dividing circuit separates sequentially inputs mixting circuit, amplifirer, the second frequency dividing circuit and voice unit, and the low frequency signal that described first frequency dividing circuit separates sequentially inputs delay circuit, mixting circuit, amplifirer, the second frequency dividing circuit and bass unit.
Active crossover: Active crossover is that signal source first passes through the first frequency dividing circuit, separates high-frequency signal and low frequency signal.
In preferred version, described signal source is divided into high-frequency signal and low frequency signal through the first frequency dividing circuit, described low frequency signal inputs mixting circuit through delay circuit, described high-frequency signal directly inputs mixting circuit, two paths of signals couples at mixting circuit, and the output of described coupled signal is amplified to amplifirer, and the signal of amplification is divided into high-frequency signal and low frequency signal by the second frequency dividing circuit, described high-frequency signal is exported by voice unit, and described low frequency signal is exported by bass unit.
Signal source is first pressed the part-frequency point of built-in first frequency dividing circuit by the present invention, separates high-frequency signal and low frequency signal, then low frequency signal is done delay disposal, to eliminate the phase contrast of high pitch bass; High-frequency signal and low frequency signal after correction couple by the mode of coupling again; Signal after coupling has reformed into the full range signal of phase calibration difference, signal is sent into amplifirer and is amplified, and sends into loudspeaker box after amplification, by giving voice unit and bass unit respectively after the second frequency dividing circuit frequency dividing of interior loudspeaker box.
Above-mentioned coupling circuit can apply to analogue audio frequency and processes in circuit or digital audio processing circuit, and wherein digital audio processing circuit includes the circuit of the phase contrast that the distance of the relevant voice unit utilizing this coupling circuit realiration elimination audio amplifier such as digital audio matrix and digital audio processor and bass unit produces.
The invention have the benefit that this circuit is not when increasing power amplifier, saves energy and not strengthening casing, solve the phase contrast of low-and high-frequency, sense of hearing is made to reach the effect the same with Dual Drive, the correcting mode of this phase contrast can be widely applied to movie system, karaoke OK system, on the various processor such as Special sound amplifying system, simultaneously in implantable digital power amplifier circuit.
Accompanying drawing explanation
Fig. 1 is the phase contrast schematic diagram of prior art alt unit and bass unit;
Fig. 2 is the physical method solving high bass unit phase contrast in prior art;
Fig. 3 is the circuit methods solving high bass unit phase contrast in prior art;
Fig. 4 is the double power amplifier circuit methods solving high bass unit phase contrast in prior art;
Fig. 5 is the overall structure schematic diagram of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated. It should be noted that accompanying drawing is merely illustrative, do not draw according to strict ratio, and be wherein likely to promising describe convenient and carry out partial enlargement, reduce, conventional partial structure is also likely to have necessarily default.
Referring to Fig. 5, the present invention relates to a kind of correct audio amplifier voice unit and bass unit phase contrast couple circuit, including signal source, Active crossover module, Passive single module and audio amplifier, wherein Active crossover module includes the first frequency dividing circuit, delay circuit and mixting circuit, Passive module includes amplifirer and the second frequency dividing circuit, second frequency dividing circuit is arranged at inside audio amplifier, arranges voice unit and bass unit in audio amplifier simultaneously.
Signal source connects the first frequency dividing circuit, first frequency dividing circuit is for being divided into high-frequency signal and low frequency signal by the signal that signal source inputs, the high-frequency signal that first frequency dividing circuit separates sequentially inputs mixting circuit, amplifirer, the second frequency dividing circuit and voice unit, and the low frequency signal that the first frequency dividing circuit separates sequentially inputs delay circuit, mixting circuit, amplifirer, the second frequency dividing circuit and bass unit. Mixting circuit, for the high-frequency signal after correction and low frequency signal are carried out coupling output, so can realize the effect that the signal of voice unit and bass unit is amplified simultaneously by an amplifirer.
First by signal source by the part-frequency point of built-in first frequency dividing circuit, separating high-frequency signal and low frequency signal, low frequency signal inputs mixting circuit through delay circuit, and high-frequency signal directly inputs mixting circuit, to eliminate the phase contrast of high pitch bass. High-frequency signal and low frequency signal after correction couple at mixting circuit, coupled signal output is amplified to amplifirer, the signal amplified is divided into high-frequency signal and low frequency signal by the second frequency dividing circuit, and high-frequency signal is exported by voice unit, and low frequency signal is exported by bass unit.
Above-mentioned coupling circuit can apply to analogue audio frequency and processes in circuit or digital audio processing circuit, and wherein digital audio processing circuit includes the circuit of the phase contrast that the distance of the relevant voice unit utilizing this coupling circuit realiration elimination audio amplifier such as digital audio matrix and digital audio processor and bass unit produces.
It is above the better embodiment of the present invention, but protection scope of the present invention is not limited to this. Any those of ordinary skill in the art in the technical scope that disclosed herein, the conversion expected without creative work or replacement, all should be encompassed within protection scope of the present invention. Therefore protection scope of the present invention should be as the criterion with claim protection defined.
Claims (5)
1. one kind correct audio amplifier voice unit and bass unit phase contrast couple circuit, it is characterized in that: include the signal source, Active crossover module, Passive single module and the audio amplifier that are sequentially connected with, described Active crossover module includes the first frequency dividing circuit, delay circuit and mixting circuit, described Passive module includes amplifirer and the second frequency dividing circuit, described second frequency dividing circuit is arranged at inside described audio amplifier, arranges voice unit and bass unit in described audio amplifier; The signal that signal source inputs is divided into high-frequency signal and low frequency signal by described first frequency dividing circuit, the high-frequency signal that described first frequency dividing circuit separates sequentially inputs mixting circuit, amplifirer, the second frequency dividing circuit and voice unit, and the low frequency signal that described first frequency dividing circuit separates sequentially inputs delay circuit, mixting circuit, amplifirer, the second frequency dividing circuit and bass unit.
2. correction audio amplifier voice unit as claimed in claim 1 and bass unit phase contrast couple circuit, it is characterized in that: described signal source is divided into high-frequency signal and low frequency signal through the first frequency dividing circuit, described low frequency signal inputs mixting circuit through delay circuit, described high-frequency signal directly inputs mixting circuit, two paths of signals couples at mixting circuit, the output of described coupled signal is amplified to amplifirer, the signal amplified is divided into high-frequency signal and low frequency signal by the second frequency dividing circuit, described high-frequency signal is exported by voice unit, described low frequency signal is exported by bass unit.
3. correction audio amplifier voice unit as claimed in claim 1 and bass unit phase contrast couple circuit, it is characterised in that: described coupling circuit is applied in analogue audio frequency process circuit.
4. correction audio amplifier voice unit as claimed in claim 1 and bass unit phase contrast couple circuit, it is characterised in that: described coupling circuit is applied in digital audio processing circuit.
5. correction audio amplifier voice unit as claimed in claim 4 and bass unit phase contrast couple circuit, it is characterised in that: described digital audio processing circuit includes digital audio matrix and digital audio processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610098086.5A CN105635917A (en) | 2016-02-23 | 2016-02-23 | Coupling circuit for correcting phase difference between high-tone unit and low-tone unit of soundbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610098086.5A CN105635917A (en) | 2016-02-23 | 2016-02-23 | Coupling circuit for correcting phase difference between high-tone unit and low-tone unit of soundbox |
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| Publication Number | Publication Date |
|---|---|
| CN105635917A true CN105635917A (en) | 2016-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610098086.5A Pending CN105635917A (en) | 2016-02-23 | 2016-02-23 | Coupling circuit for correcting phase difference between high-tone unit and low-tone unit of soundbox |
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| Country | Link |
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| CN (1) | CN105635917A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103037290A (en) * | 2011-10-07 | 2013-04-10 | 索尼公司 | Audio processing device, audio processing method, recording medium, and program |
| CN103583053A (en) * | 2011-06-09 | 2014-02-12 | 皇家飞利浦有限公司 | An audio speaker arrangement |
| CN205566629U (en) * | 2016-02-23 | 2016-09-07 | 南京百音高科技有限公司 | Rectify interconnected circuit of audio amplifier tweeter unit and bass unit phase difference |
-
2016
- 2016-02-23 CN CN201610098086.5A patent/CN105635917A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103583053A (en) * | 2011-06-09 | 2014-02-12 | 皇家飞利浦有限公司 | An audio speaker arrangement |
| CN103037290A (en) * | 2011-10-07 | 2013-04-10 | 索尼公司 | Audio processing device, audio processing method, recording medium, and program |
| CN205566629U (en) * | 2016-02-23 | 2016-09-07 | 南京百音高科技有限公司 | Rectify interconnected circuit of audio amplifier tweeter unit and bass unit phase difference |
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Application publication date: 20160601 |